Method for producing a foamed granulate and use thereof

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United States of America Patent

PATENT NO 11708473
SERIAL NO

16492922

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Abstract

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The invention relates to a method in which a polyester melt containing one or more polyesters is produced, the polyester melt being foamed by a blowing agent and a foamed granulate is produced from the foamed polyester melt. The intrinsic viscosity (IV) of the polyester melt is reduced by the blowing agent about at least 0.05 dl/g, measured according to ASTM D4603, and the IV of the foamed granulate is then increased by means of a solid phase polycondensation (SSP).

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Patent Owner(s)

Patent OwnerAddress
ALPLA WERKE ALWIN LEHNER GMBH & CO KGALLMENDSTRASSE HARD A-6971

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Siegl, Robert Dornbirn, AT 36 171
Weber, Andreas Thuringen, AT 189 1454

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